Lifting-jack.



PATENTED DEC. 29, 1903.

I. WILLIAMS. LIFTING JACK.

APPLIOATION FILED MAR.14. 1903.

NO MODEL.

W m, 1 I WWW UNITED STATES Patented December 29, 1903.

FRANCIS M. WILLIAMS, OF IOWA FALLS, IOWA.

LlFTlNG-JACK.

SPECIFICATION forming part of Letters Patent No. 748,127, dated December29, 1903.

Application filed March 14, 1903.

T0 on whom it may concern:

Be it known that I, FRANCIS M. WILLIAMS, a citizen of the United Statesof America, residing at Iowa Falls, in the county of Hardin and State ofIowa, have invented certain new and useful Improvementsin Lifting-Jacks,of which the following is a specification.

This invention relates to hoisting machinery, and particularly to thatclass known as lifting-jacks.

The object of the invention is to produce a lifting-jack having novelmeans for permitting its being moved or conveyed; furthermore, toproduce a lifting -j ack having a wheel whereby one supporting member ofthe jack is caused to ride intoposition, and, furthermore, to providemeans for utilizing the wheel in transporting the jack.

Finally the object of the invention is to produce a jack which willpossess advantages 'in points of utility, simplicity, strength, and

durability, proving at the same time comparatively inexpensive.

With the foregoing and other objects in View the invention consists inthe details of construction and in the arrangement and combination ofparts to be hereinafter more fully set forth and claimed.

In describing the invention in detail reference will be had to theaccompanying drawings, forming part of this specification, wherein likecharacters denote corresponding parts in the several views, and inwhich-- Figure 1 is a view in elevation illustrating a lifting-jackembodying the invention. Fig. 2 is a detail View. Fig. 3illustratesaslightlymodified construction.

In the drawings, 1 indicates a notched bar or lever for the support ofthe axle of vehicles. A standard comprising strips 2 is pivoted near theend of the bar 1, and a wheel 3 is mounted between the strips on a bolt4, which passes through the strips. The wheel is provided to support thestandard when it is in an inclined or an approximately horizontalposition. The standard 4 is about the Serial No. 147,796. (No model.)

same in construction as the one heretofore described and is pivoted tothe bar in front of the notch 5.

In operation the bar is placed under an axle with the standard 4:vertically disposed. The

bar is then manipulated tobring the notched portion into engagement withthe axle and by further pressure elevates the axle until the standard 2is approximately vertically disposed, when the jack will support theaxle with its wheel clear of the floor or ground.

In the modification shown in Fig. 3 the Wheel A is provided for thefront standard 4*, and it is spring-held in the position shown in dottedlines. When supporting a vehicleaxle, the weight is suficient to causethe wheel to pass between the sides of the standard and permit the endof the standard to engage the ground or floor. The wheel A will be founduseful in moving the jack or in adjusting the standard for use.

I I may have the end of the bar extend beyond the end of the standardand provide a stop-pin 6 on the bar to abut the standard, thuspreventing the downward movement of the standard and bar beyond apredetermined distance when moving the device uponthe wheels 3 and A.The arrangement allows for the guiding of the jack When it is beingwheeled from place to place. A stop-pin 4" is also provided in the frontstandard in order to retain the said standard in an approximatelyvertical position when moving the device.

The construction, operation, and advantages will, it is thought, beunderstood from the foregoing description, it being noted that variouschanges may be made in the proportions and details of construction forsuccessfully carrying the invention into pracv tice.

Having fully described my invention, what I claim as new, and desire toobtain by Letters Patent, is-

1. In a lifting-jack, a notched lever,a standard or support near one endof the lever, a

limiting the swing of the last-named stand- 10 ard with relation to thelever.

In testimony whereof I affix my signature, in the presence of twowitnesses, this 7th day of March, 1903.

FRANCIS M. WILLIAMS. Witnesses:

FRANK. D. PEET, O. B. RICHMOND.

